Alert archive / South Dakota / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 80, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 27, 1992, 8:39 PM CDT for Clay County, South Dakota. It was in force for 36 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 27, 1992, 8:39 PM CDT (01:39 UTC)
- Expired
- Jul 27, 1992, 9:15 PM CDT
- In force
- 36 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Whole counties
County Clay County, SD
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 27, 9:18 PM CDT | Hail 1.5 | Clay, SD |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 1.7 hours before the alert went out and 184 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 19 J/kg
- Mixed-layer CIN
- -329 J/kg
- Mixed-layer LCL
- 1684 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFSD 280138 SVRFSD SDC027-280215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 839 PM CDT MON JUL 27 1992 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES... IN SOUTHEAST SOUTH DAKOTA ...NORTHERN CLAY COUNTY AT 834 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 35 MILES SOUTHWEST OF SIOUX FALLS JUST WEST OF CENTERVILLE IN SOUTHERN TURNER COUNTY. THE STORM WAS MOVING TO THE SOUTHEAST AT 25 MPH. THIS STORM WILL MOVE JUST EAST OF WAKONDA BY 900 PM CDT. PERSONS IN WAKONDA AND ALONG THE PATH OF THIS STORM SHOULD BE READY FOR LARGE HAIL...STRONG WINDS AND HEAVY RAINS. IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD GET TO A REINFORCED SHELTER. A SEVERE THUNDERSTORM PRODUCES WINDS IN EXCESS OF 60 MPH...HAIL 3/4 INCH OR LARGER...DEADLY LIGHTNING...AND HEAVY RAIN THAT CAN QUICKLY FLOOD A LOW LYING AREA. DIRCKSEN
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jul 27, 7:38 PM CDT, 1 hour 1 minute before
SDZ018>020-280200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 739 PM CDT MON JUL 27 1992 ...STRONG THUNDERSTORMS DEVELOPING OVER SOUTHEAST SOUTH DAKOTA... AT 730 PM CDT A STRONG THUNDERSTORM WAS DEVELOPING 30 MILES SOUTHWEST OF SIOUX FALLS OR 5 MILES EAST OF FREEMAN SOUTH DAKOTA. THE THUNDERSTORM WAS MOVING SOUTHEAST AT 30 MPH. THIS THUNDERSTORM HAS THE POTENTIAL TO PRODUCE HAIL AND STRONG WINDS. RESIDENTS AND THOSE TRA<VELING IN THE PATH OF THIS THUNDERSTORM SHOULD BE PREPARED FOR THIS ADVERSE WEATHER AND MOVE TO A SAFE REINFORCED SHELTER IF NECESSARY. THE THUNDERSTORM IS EXPECTED TO DISSIPATE BY 9 PM CDT. BLOOM
Special weather statement, Jul 27, 8:12 PM CDT, 27 minutes before
IAZ013-020-021-031-032-043-NEZ094>096-SDZ066-280200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX CITY IA 812 PM CDT MON JUL 27 1992 ...AN INTENSE THUNDERSTORM WAS OVER SOUTHEAST SOUTH DAKOTA... AT 810 PM A STRONG THUNDERSTORM WAS 60 MILES NORTHWEST OF SIOUX CITY OR 15 MILES NORTHWEST OF BERESFORD SOUTH DAKOTA. THIS STORM HAS PRODUCED LARGE HAIL. MOVEMENT WAS SOUTHEAST AT 30 MILES AN HOUR. THIS STORM IS EXPECTED TO WEAKEN THIS EVENING. HOWEVER BERESFORD SOUTH DAKOTA CAN EXPECT HEAVY RAIN BETWEEN 830 AND 9 PM. SMALL HAIL AND WIND GUSTS TO 35 MILES AN HOUR WILL ALSO BE POSSIBLE. DROZD
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 7:57 PM CDT | Severe Thunderstorm Warning | FSD | Turner | 33 min |
| Jul 27, 9:25 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 28 min |
| Jul 27, 11:10 PM CDT | Severe Thunderstorm Warning | FSD | Clay | 35 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 1992Every severe thunderstorm warning in 1992
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.